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Finding the Fourth Proportional to 299,010.60, 448,515.90 and 287,346.60

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Solution

The fourth proportional to 299,010.60, 448,515.90 and 287,346.60 is: 431,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,010.60 : 448,515.90 = 287,346.60 : x
  2. Step 2: Convert to fraction form
    299,010.60/448,515.90 = 287,346.60/x
  3. Step 3: Cross multiply
    299,010.60x = 448,515.90 × 287,346.60
  4. Step 4: Simplify right side
    299,010.60x = 128,879,518,910.94
  5. Step 5: Solve for x
    x = 128,879,518,910.94/299,010.60
  6. Step 6: Final answer
    x = 431,019.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.